Shell script to make a shared Git repository

makerepo

#!/bin/sh

CMDNAME=`basename $0`
GROUP=$1
REPODIR=$2

if [ -z $REPODIR ]; then
  echo "usage: $CMDNAME <group> <dir>"
  echo "creates a shared Git repository for group <group> in the specified directory"
  exit 0
fi

if [ -z `grep ^$GROUP /etc/group` ]; then
  echo "no such group $GROUP"
  exit 1
fi

if [ `id -u` != '0' ]; then
  echo "this command must be run as root"
  exit 2
fi

if [ -e $REPODIR ]; then
  echo "destination directory already exists"
  exit 3
fi

CWD=`pwd`
mkdir -p $REPODIR
cd $REPODIR
# At some point every copy of Git will be recent enough to have the
# --shared=group option in git-init
git --bare init
git config core.sharedRepository group
cd ..
chmod -R g+rwXs $REPODIR
chgrp -R $GROUP $REPODIR
cd $CWD